Entrevista
Plants and Food
Plants and food exam notes for iGCSE
[Mostrar más]Vista previa 1 fuera de 2 páginas
Vista previa 1 fuera de 2 páginas
Añadir al carritoVendedor
Seguir
Vista previa del contenido
PHOTOSYNTHESIS WORD EQUATION BALANCED EQUATION FOR PSsunlight sunlight
CO2 + H2O ————→ glucose + O2 6CO2 + 6H2O ————→ 6O2 + C6H12O6
chlorophyll chlorophyll
IMPORTANCE OF ITS PROCESS AND ITS CONVERSION OF LIGHT ENERGY TO CHEMICAL ENERGY
In PS in green plants, light is used to convert: H2O+ CO2 + minerals → O2 + energy-rich compounds.
PRACTICAL TO MEASURE ITS RATE USING POND WEED
METHOD
- set up apparatus as shown
- place lamp 10cm from pondweed
o
- lamp on; count n of bubbles produced in 1 min
- repeat with a lamp at diff. distance of pondweed
INDEPENDENT VARIABLE
- light intensity
HOW TO TEST A LEAF FOR STARCH HOW IT CAN BE USED TO SAY IF PS IS TAKING PLACE
-boil leaf to kill the leaf and stop PS Leaves have:
-add ethanol to take away the leaf color
green parts where the cells contain chlorophyll
-rinse leaf with warm water to remove extra
ethanol because it is flammable
white parts where there is no chlorophyll
This is evidence as chlorophyll is required for photosynthesis.
EXPLAIN WHAT LIMITING FACTORS IS HOW EACH AFFECT PS RATE
Any factor that slows down the rate of a process light if low → low photosynthesis
LAW: when a process depends on 2/+ factors, the rate is limited by the CO2 if more → more photosynthesis
factor which is shortest in supply.
temp too hot → ps rate ↓ or it can die
CARBOHYDRATES LIPIDS PROTEINS
CHEM. ELEMENTS carbon, oxygen, hydrogen carbon, oxygen, hydrogen C, oxygen, sulphur, nitrogen
HOW PLANTS USE GLUCOSE
Respiration, making fruits, cell walls, proteins, stored in seeds and stored in starch
Los beneficios de comprar resúmenes en Stuvia estan en línea:
Garantiza la calidad de los comentarios
Compradores de Stuvia evaluaron más de 700.000 resúmenes. Así estas seguro que compras los mejores documentos!
Compra fácil y rápido
Puedes pagar rápidamente y en una vez con iDeal, tarjeta de crédito o con tu crédito de Stuvia. Sin tener que hacerte miembro.
Enfócate en lo más importante
Tus compañeros escriben los resúmenes. Por eso tienes la seguridad que tienes un resumen actual y confiable. Así llegas a la conclusión rapidamente!
Preguntas frecuentes
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
100% de satisfacción garantizada: ¿Cómo funciona?
Nuestra garantía de satisfacción le asegura que siempre encontrará un documento de estudio a tu medida. Tu rellenas un formulario y nuestro equipo de atención al cliente se encarga del resto.
Who am I buying this summary from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller elsamompoalbiana. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy this summary for 10,99 €. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
45,681 summaries were sold in the last 30 days
Founded in 2010, the go-to place to buy summaries for 14 years now